If you watched certain YouTube videos, investigators demanded your data
mashable.com
mashable.com
This seems in line with other types of legal subpoenas - I can't recall the exact situation, but after a string of bank robberies across a state, police subpoenaed cell tower records for cell phones that had pinged towers near each bank while it was being robbed, and that quickly led them to the robbers.
edit: https://arstechnica.com/tech-policy/2013/08/how-cell-tower-d...
Turns out the cops got all the cell tower records for 4 rural robberies, and did the intersection themselves, but I don't know why the phone co couldn't do that.
I don't actually trust YouTube with processing my watch history when I use their service, but I don't have any other options.
1) automation scripts like https://addshore.com/2022/09/hunting-youtube-crypto-scams/
2) scrapers from analytics systems
3) botnet nodes to boost view count
> YouTube's parent company Google was ordered by federal investigators to quietly hand over all such viewer data for the period of Jan. 1 to Jan. 8, 2023, but Forbes couldn't confirm if Google had complied.
Another reason to be cautious about giving services your phone number.
> [0] Not many realize this, but a telephone number is one instant, low-cost API call to a data broker away from your name, physical address, associated/other email addresses, date of birth, etc.
[0] https://sneak.berlin/20200220/discord-is-not-an-acceptable-c...
I assume they did, or Google would be bragging to Forbes about how they refused and how they care so much about their user's privacy.